Switch handle control mechanism for dispensing pumps



C. T. NEAL Fel. 14, 1939.

SWITCH HANDLE CONTROL MECHANISM FOR DISPENSING PUMPS g Il h .14. i l mvry@ MU/ E. lo 5 O O P o o Feb. 14, 1939. c. T. NEAL 2,147,125

SWITCH HANDLE CONTROL MECHANISM FOR DISFENSING PUMPS Original Filed May5, 1957 3 Sheets-Sheet 2 INVENTOR @ESTER z /Ve-AL 'Feb. 14, 1939.

C. T. NEAL SWITCH HANDLE CONTROL'MECHANISM FOR DISFENSING PUMPS OriginalFiled May 5, 1937 3 Sheets-Sheet 3 INVENTOR @mi 77M ATTORNEYS Patented Feb. 14, 1939 SWITCH HANDLE/ CONTROL LIECHANISM FOR DISPEN SING PUlYlPSChester T., Neal, Springfield, Mass., assigner to Gilbert & BarkerManufacturing Company,

West Springfield, Mass.

sachusetts a corporation of Mas- Application May 5, 1937, Serial No.140,874

' Renewed June 30, 1938 6 Claims.

As is customary in such dispensing pumps, the

register has a manually actuated' device for resetting its indicator tozero so that the quantity of each dispensing operation may be accuratelyl and separately registered' and the present improvement relates moreparticularly to means for inducing the pump attendant to perform theresetting operation of the register prior to the start of each newdispensing operation.

The particular features of the invention and advantages thereof will bemore clearly apparent from the following description taken in connectionwith the accompanying drawings, in which Fig. 1 is a front elevation ofthe entire pump casing with a portion of the casing removed to showinterior parts;

Fig. 2 is a right side elevation of the pump casing with the relativeposition of some of the principal parts indicated thereon;

Fig. 3 is a detached side elevation of the motor switch handle for thepump and its mounting;

Fig; 4 is e. fragmentary section along line 4-4 of Fig. 3;

Fig. 5 is a similar section along line 5- 5 of Fig. 3;

Fig. 6 is a partial'end view of the switch handle bracket showing behindthe same in dotted lines one position of the locking beam and itsassociated parts; and

Fig. 7 is a similar view showing the other position of said locking beamand associated parts.

Referring more particularly to the drawings,' I indicates the pumpcasing, 2 the casing of a combined motor and pump unit, and havingintegral therewith the casing 3 for containing the motor switch as iswell understood. The liquid fluid or gasoline is drawn by the pumpthrough the pipe 4 from asource of supply not shown and forced outthrough delivery pipe 5 and meter 6 and finally through dispensing hose'I and nozzle 8. The nozzle guard 9 is adapted to rest on a fixedsupport I0 extending from the pump casing and when on said support theg'uard 9 interferes and prevents the turning to on positionof the motor.switch handle II. The switch handle Il is fixed to a turnable shaft orstem I2 mounted in a bracket I3, the latter being secured to the pumpcasing.

As shown in Fig. 3, the inner end of said handle stem I2 has xed theretoan arm I4 connected by link I5 to an arm I6 for operating the motorswitch within the casing 3. In Fig. 2 the motor switch handle I I isshown in its off position for shutting off the pump motor and the lineof the on position is also therein indicated. As shown 5 in Figs. 4 and5, the movement of the switch handle II between its on and 01T positionsis limited by stop pins II and I8 fixed to the stem I2 coacting withstop lugs I9 and 20 fixed to the bracket I3.

The register indicator for the pump is shown generally at 2l and isprovided with the usual number dials 22 for indicating the quantity ofgasoline dispensed in terms of gallons and in terms of cost value as isthe present day practice with l5 such registers. The register is drivenin the usual manner through shaft 23 from the uid operated meter 6. Theresetting mechanism, for returning the indicator dials 22 to zero afterthe dispensing operation, comprises a crank handle 25 fixed 20 to areset shaft 26 which extends across the pump casing and is permanentlyclutched to a cam collar 21 mounted in the bracket I3. It will beunderstood that the resetting shaft 26 when revolved through a completerevolution (counter- 25 clockwise as one faces the handle 25) operatesthe usual devices (not shown) for returning the indicator dials 22 tozero.

Referring more particularly to Figs. 6 and 7, the switch handle stem I2has loosely mounted 30 for a partial and relative rotation thereon aresist member in the form of a cam collar 28. As shown in Figs. 3 and 4,the relative movement of the cam collar 28 on the stem I2 is limited bya pin 29 fixed in stem I2 and extending into a segmental 35 slot 30formed in a reduced shoulder of said collar 28. A coil spring 3l has oneend 32 thereof xed to the handle stem I2 at a pin I'I thereof and theother end of the coil spring is fixed into the collar 28 by an anchoringprojection 33 of said 40 spring. The tension of the spring 3| tends torotate the cam collar 28 counterclockwise and to rotate the handle stemI2 clockwise relatively to one another until the pin I9 abuts the righthand Wall of the segmental slot 30, as viewed in Fig. 4. 45

or resist member 28. On the" other hand, if no means interpose toprevent the follow-up action of collar 28 with respect to stem I2, thenthe collar will turn back and forth with said stem in the vmovements ofthe latter between its off and peripheral surface of the cam collar 28(at one side of caml 50) and is adapted to drop into a cam notch 31formed insaid surface'and having a stop shoulder 38 whereby when the end36 is in said l notch the collar 28 will be prevented from clockwisemovement. The other end 39 of said locking beam 35 works against theperipheral surface of the cam collar 21 (at one side of cam 5I) and isadapted to drop into locking notch 48 for preventing rotation of saidreset shaft 26. The shoulder 4 Iv of said notch 48 is suiciently beveledto permit the reset shaft 26 being rotated clockwise, viewing Fig. 7,upon application of extra force, and camming said end 39 out of thenotch 48, except when the end 36 of said 4beam 35 is resting upon thesolid unnotched portion of said collar 28. In said latter conditionwhich is the position with the switch handle II in on position, the end39 when'in notch 40 positively locks the reset shaft from beingoperated. It will be understood that the reset shaft 26 in its resettingaction turns clockwise when viewing Fig. 7.

The means for shifting and holding the locking beam 35 into its twodifferent positions as shown in Figs. 6 and 'I comprises a loadingspring 42 mounted on a toggle rod 43, one end of which rod is pivotallyconnected at 44 to a toggle plate 45` and the other end of which rodslides through a rocking pivot stud 46 extended from the bracket I3. Thespring 42 is interposed under compressed tension between said pivot stud46 and a shoulder on said rod 43. The toggle plate 45 is a bifurcatedmember straddling the beam 35 and pivoted on the stud 44. Between theside members of said toggle plate 45 are mounted studs or rollers 41,-48 and 49. The cam collar 28 is formed with a cam 58 which is in aplane at one side of the beam 35 and in the plane of said roller 41 soas to. act thereagainst. Similarly, the cam collar 21 on the reset shaft26 is provided with a cam 5I adapted to act against the rollers 48 and49 of the plate 45. It will be understood that when the cam collar 28turns clockwise it's cam 58 acts against roller 41 to throw the toggle43, 45 from the position shown in Fig. '1 to the position shown in Fig.6, and that when cam collar 21 rotates clockwise its cam 5I actingagainst the rollers 48 and 49, throws the toggle combination 43, 45 fromthe position shown in Fig. 6 to that shown in Fig. '1. With the togglein the position shown in Fig. 6 roller' 49 bears against a shoulder ofsaid vbeam 35 whereby the loading spring 42 tends to rockthe beam 35anticlockwise to bring its end 36 into the notch 31 of said cam'collar28, and

when the toggle is in the position shown in Fig. 7 the roller 41 bearsagainst the beam 35 whereby the loading spring 42 tends to remove theend 36 from the notch 31 and to press the end 39 into the notch 48 ofcam collar 21.

The loperation of the above described mechanism in connection with theoperation of the pump will now be described. Assume that the pumpattendant has just completed a dispensing operation and has turned offthe motor switch, but has vnot yet operated the reset mechanism. Theswitch handle I I thereof will then be in the olf position shown in Fig.2. The toggle 43, 45

. will be at the left as shown in Fig. 6, having been thrown to thisposition by the previous on movement of the switch handle I I. Theloading spring 42 presses the roller 49 against the beam 35 and holdsits end 36 in the notch 31 of said cam collar 28, whereby said camcollar 28 cannot turn clockwise.

If in this condition of/'the parts the attendant A fails to operate thereset crank 25 for returning the register to zero, buton the contraryturns on the motor switch for a new dispensing operation, he does soagainst the resisting force ofthe spring 3I because since the cam.collar 28 is locked against its follow-up movement with the stem I2 saidstem can only be turned by further compresits on position. If theattendant lets go of the handle II Vit will move back to off positionand stop the pump under the force of the spring 3l. However, theattendant being warned by the resistance of said spring 3| that thereset mecha.- nism has not been operated, he should immediately operatethe same by turning the reset shaft 26 a complete revolution through thehandle 25. The turning of the reset shaft will then carry its cam 5Iagainst the rollers 48 and 49 and throw the toggles 43, 45 to its righthand position shown in Fig. '1. In this position the roller 41 bears onthe beam 35 and the loading spring 42 will rock said beam to withdrawits end 36 out of notch 31 and release the heretofore locked cam collar28. Upon said release the cam collar 28 under force of its spring 3|immediately follows up to the on position of the stem I2 and therebyremoves all resistance of said spring 3I to said on position of theswitch handle I I. Under these conditions the attendant may let go ofthe switch handle I I and it will remain in on position so that thedispensing can be proceeded with.

The normal and proper way for the attendant to operate the mechanism inperforming a dispensing operation when the switch handle is in offposition as shown in Fig. 2, is to first rotate the reset shaft 26 byhandle 25 before turning on will readily follow up the' movement ofAsaid switch n handle stem I2.

By the arrangement above described the pump attendant may at all timeswhether or not the reset mechanism is operated, turn on the motor switchfor starting the dispensing operation, but unless the reset shaft hasbeen revolved previously to turningon the switch handle, the dispensingcannot be continued except by manually holding said handle in its on"position against the tension of the spring. On the other hand, byoperating the reset mechanism before turning the switch handle on the'latter is moved on without resistance and will remain in its onposition without being manually held on, and the attendant can walk awayfrom the pump for more conveniently servicing an automobile withgasoline. Itis expected that the warning given by the resist member andits spring, together with the convenience of being able to leave thepump, will be a suiiicient inducement for the attendant to alwaysoperate the pump in the proper sequence of steps, viz., iirst reset andthen turn on the motor.

I claim:

1. In liquid dispensing apparatus of the type having means forestablishing flow, a register for indicating the quantity of liquiddispensed and reset mechanism for zeroizing said register, controlmechanism comprising a control handle movable to on and oif" positionscorresponding to starting and stopping the ow, a spring for resistingthe movement of said handle to on position, said spring adapted to beovercome by manual force applied to said control handle and tending whenstressed to return said handle to its oi position, and means actuated bythe zeroizing operation of saidreset mechanism to remove the resistingaction of said spring on said control handle.

2. In liquid dispensing apparatus of the type having means forestablishing iiow, a register for indicating the quantity of liquiddispensed and reset mechanism for zeroizing said register, controlmechanism comprising a control handle movable to "on and oi positionscorresponding to starting and stopping the ow, a resist member connectedby a spring to said control handle for being moved therewith and adaptedwhen held from movement to permit independent movement of said handle toits on position against the stress of said spring, a movable stop forsaid resist member, moving into active position upon the cessation ofeach dispensing operation, and means actuated by the zeroizing operationof said reset mechanism to move said stop into inactive position withrespect to said resist member.

3. In liquid dispensing apparatus of the type having means forestablishing ilow, a register for indicating the quantity of liquiddispensed and reset mechanism for zeroizing said register, .controlmechanism comprising a control handle movable to on and o positionscorresponding to starting and stopping the ilow, a resist memberconnected by a spring to said control handle for being moved therewithand adapted when held from movement to permit independent movement o!said handle to its "on position against the stress of said spring, amovable stop for said remember.

sist member, means operated by the movement of said control handle toot" position to render said stop active, and means actuated by thezeroizing operation of said reset mechanism to render said stop inactivewith respect to said resis 4. In liquid dispensing apparatus of the typehaving means for establishing flow, a register for indicating thequantity of liquid dispensed and reset mechanism for zeroizing saidregister, control mechanism comprising a control handle and stem xedthereto movable to on and oi positions corresponding to starting andstopping the 110W, a resist member loosely carried on said stem andconnected thereto by a spring to move therewith, a movable stop for saidresist member moving into active position .upon the cessation of eachdispensing operation, and means actuated by the zeroizing operation ofsaid reset mechanism to move said stop into inactive position withrespect to said resist member.

5. In liquid dispensing apparatus of the type having means forestablishing flow, a register for indicating the quantity of liquiddispensed and reset mechanism for zeroizing said register, controlmechanism comprising a control handle and stem fixed thereto movable toon and oif positions corresponding to starting and stopping the ow, aresist member loosely carried on said stem and connected thereto by aspring to move therewith, a movable stop for said resist member, meansoperated by themovement of said control handle to oi position to rendersaid stop active, and means actuated by the zeroizing operation of saidreset mechanism to render said stop inactive with respect to said resistmember.

6. In liquid dispensing apparatus of the type having means forestablishing flow, a register for indicating the quantity of liquiddispensed and reset mechanism for zeroizing said register, controlmechanism comprising a control handle and stem iixed thereto movable toon and o positions corresponding to starting and stopping the ow, aresist member loosely carried on said stem and connected thereto by aspring to move therewith, a pivoted locking beam for said resist member,a loading spring for said pivoted beam adapted to be shifted to alocking side thereof to place said beam in active position and to anunlocking side thereof to place said beam in inactive posil tion withrespect to said resist member, means operated by the movement of saidcontrol handle to "on position to shift said loading spring to thelocking side of said pivoted beam, and means actuated by the zeroizingoperation of said reset mechanism to shift said loading spring to theunlocking side of said pivoted beam.

CHESTER T. NEAL.

